Resources Contact Us Home
Control apparatus of internal combustion engine

Image Number 15 for United States Patent #7284367.

The ignition timing is sustained at an initial value during a predetermined time beginning at a start of an engine, and is retarded after the predetermined time is elapsed to heat a catalyst at an early time. The predetermined time ends when the negative pressure of an intake pipe or the negative pressure of a brake booster reaches to a predetermined value. That is, the predetermined time is a period, which begins at a start of the engine and ends when a proper negative pressure can be sustained in the brake booster. As a result, it is possible to assure a negative pressure in the brake booster at an early time and to reduce exhaust emission at a start of the engine simultaneously.

  Recently Added Patents
Three-dimensional shape data processing apparatus and three-dimensional shape data processing method
Electronic system with vertical intermetallic compound
Control device for radiation imaging apparatus and control method therefor
Printed wiring board with reinforced insulation layer and manufacturing method thereof
Nonaqueous secondary battery with nitrile group-containing compound
Plasma panel based radiation detector
Micro vein enhancer
  Randomly Featured Patents
Low power, low cost illuminated keyboards and keypads
Image recording medium producing apparatus
Optical pickup device with high-frequency superposition circuit
Current controlled bridge amplifier
Plasma display panel with energy recovery circuit and driving method thereof
Image transmission apparatus using a random arrangement of optical fibers
Flame retardant resin composition
Shock absorber
Method of performing model-based scanner tuning
Method and apparatus for data transfer using an optical link in a projector system